Optimal Particle-Filter-Based Detector

Yvo Boers (Corresponding Author), Pranab K. Mandal

    Research output: Contribution to journalArticleAcademicpeer-review

    2 Citations (Scopus)
    85 Downloads (Pure)

    Abstract

    In this letter, we propose and prove the asymptotic optimality of a particle-filter-based detection scheme. The detection method can be used in a general nonlinear/non-Gaussian signal detection problem. The proposed detection mechanism is based on the likelihood ratio (LR) and thus optimal in the Neyman-Pearson sense, but we approximate the LR based on a particle filter (PF). We show the asymptotic optimality by proving that the PF-based approximation of the LR converges to the true LR as the number of particles increases to infinity. We also discuss the practical and operational implications of the result, the main one being that it is optimal in the sense that no other processing and detection mechanism can have higher probability of detection, while having the same or lower false alarm rate.
    Original languageEnglish
    Pages (from-to)435 - 439
    Number of pages5
    JournalIEEE signal processing letters
    Volume26
    Issue number3
    DOIs
    Publication statusPublished - 1 Mar 2019

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